Indoor/outdoor relationships for ambient PM2.5 and associated pollutants: epidemiological implications in Lindon, Utah.
J Air Waste Manag Assoc
; 50(1): 103-10, 2000 Jan.
Article
in En
| MEDLINE
| ID: mdl-10680370
ABSTRACT
Outdoor and indoor fine particulate species were measured at the Lindon Elementary School in Lindon, Utah, to determine which components of ambient fine particles have strong indoor and outdoor concentration correlations. PM2.5 mass concentrations were measured using tapered element oscillating microbalance (TEOM) monitors and by gravimetric analysis of Teflon filter samples. Gas-phase HNO3, sulfur dioxide, particulate nitrate, strong acid, and particulate sulfate were measured using annular denuder samplers. Soot was measured using quartz filters in filter packs. Total particulate number was measured with a condensation nucleus counter (CNC). Total particulate number and fine particulate sulfate and soot were correlated for ambient and indoor measurements. Indoor PM2.5 mass showed a low correlation with outdoor PM2.5 mass because of the influence of coarse material from student activities on indoor PM2.5. Fine particle acidity and the potentiation of biological oxidative mechanisms by iron were not correlated indoors and outdoors.
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Collection:
01-internacional
Database:
MEDLINE
Main subject:
Air Pollution, Indoor
/
Air Pollutants
/
Air Pollution
Type of study:
Risk_factors_studies
Limits:
Humans
Country/Region as subject:
America do norte
Language:
En
Journal:
J Air Waste Manag Assoc
Journal subject:
SAUDE AMBIENTAL
Year:
2000
Document type:
Article
Affiliation country:
Estados Unidos